Stylus for providing tilt angle and axial direction and control method thereof
First Claim
1. A stylus providing a tilt angle and an axial direction of a stylus body, comprising:
- a first electrode at a tip of the stylus;
a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled;
at least one signal source selectively coupled to the first electrode and the second electrode; and
a control module connected to the first electrode and the second electrode, wherein the control module is configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, the control module is further configured to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period.
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Accused Products
Abstract
The present invention provides a stylus for providing a tilt angle and an axial direction of a stylus body, including: a first electrode at a tip of the stylus; a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled; and a control module connected to the first electrode and the second electrode, wherein the control module is configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, the control module is further configured to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period.
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Citations
29 Claims
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1. A stylus providing a tilt angle and an axial direction of a stylus body, comprising:
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a first electrode at a tip of the stylus; a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled; at least one signal source selectively coupled to the first electrode and the second electrode; and a control module connected to the first electrode and the second electrode, wherein the control module is configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, the control module is further configured to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control method of a stylus providing a tilt angle and an axial direction of a stylus body, the stylus comprising a first electrode at a tip of the stylus, a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled, the control method comprising:
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during a first time period, having the first electrode emitting a first-time-period electrical signal and the second electrode connecting to a direct current voltage; and during a second time period, having the first electrode emitting a second-time-period electrical signal and the second electrode floated. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A touch control apparatus detecting a tilt angle and an axial direction of a stylus, comprising:
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a sensing circuit connected to a touch screen, wherein the touch screen includes a plurality of first touch sensitive electrodes and a plurality of second touch sensitive electrodes, the plurality of first touch sensitive electrodes and the plurality of second touch sensitive electrodes intersecting to form a plurality of sensing points; and a processing module connected to the sensing circuit, the processing module instructing the sensing circuit to detect a first-time-period electrical signal emitted by a first electrode of the stylus during a first time period, and instructing the sensing circuit to detect a second-time-period electrical signal emitted by the first electrode and a second electrode of the stylus during a second time period, and determining the tilt angle and the axial direction of the stylus based on detection results of the first and the second time periods, wherein the second electrode surrounds the first electrode, the first electrode and the second electrode are not electrically coupled. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A control method detecting a tilt angle and an axial direction of a stylus, comprising:
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instructing a sensing circuit to detect a first-time-period electrical signal emitted by a first electrode of the stylus via a touch screen during a first time period; instructing the sensing circuit to detect a second-time-period electrical signal emitted by the first electrode and a second electrode of the stylus via the touch screen during a second time period; and determining the tilt angle and the axial direction of the stylus based on the detection results of the first time period and the second time period, wherein the second electrode surrounds the first electrode, and the first electrode and the second electrode are not electrically coupled. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A touch sensitive system detecting a tilt angle and an axial direction of a stylus body, comprising:
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a stylus including; a first electrode at a tip of the stylus; a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled; at least one signal source selectively coupled to the first electrode and the second electrode; and a control module configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, and to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period; a touch screen including a plurality of first touch sensitive electrodes and a plurality of second touch sensitive electrodes, the plurality of first touch sensitive electrodes and the plurality of second touch sensitive electrodes intersecting to form a plurality of sensing points; and a touch control apparatus including; a sensing circuit connected to the touch screen; and a processing module connected to the sensing circuit for instructing the sensing circuit to detect the first-time-period electrical signal emitted by the first electrode of the stylus during the first time period, and instructing the sensing circuit to detect the second-time-period electrical signal emitted by the first electrode and the second electrode of the stylus during the second time period, and determining the tilt angle and the axial direction of the stylus based on detection results of the first and second time periods.
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Specification